Which is understandable following the retirements of Captain Patrice Bergeron and David Krejci. They have also lost the following: Tyler Bertuzzi, Dmitry Orlov, Taylor Hall, Nick Foligno, Garnet Hathaway, Connor Clifton and Craig Smith.
With all of that, Boston hasn't really added anything either. They're clearly going for a veteran type team — pushing for one more year. Sweeney has Pasternak locked up for 8 more years at $11,500,000 AAV, but that's all they really have going for them.